Boot buckle tightener



FIG. 1 is a perspective view of the boot buckle tightener showing my newdesign;

FIG. 2 is a right side elevational view thereof, the side opposite beinga mirror image;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a front elevational view thereof.

The ornamental design for a boot buckle tightener, as shown anddescribed.